<?phpclass devtools_hashing_page extends page {  protected $sha1 = "";  protected $md5 = "";  protected $text = "";  public function __construct() {  }    public function prepare() {    if (request::is_post()) {      $text = trim(request::get_form_var("input_text"));      $this->text = $text;      $this->sha1 = sha1($text);      $this->md5  = md5($text);    }  }    public function finish() {  }    public function render_block($block_name) {    $block = $this->get_block($block_name);    $block->render_html();  }    public function render_blocks($position) {    //  }}